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Home >> Mercury >> 1998 >> Mystique Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Intake Air Temperature (IAT) Sensor
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Intake Air Temperature (IAT) Sensor

IAT sensor is a thermistor device which changes resistance proportionate to temperature changes. IAT sensor inputs air temperature to the PCM. The IAT sensor provides a quicker temperature change response time than the ECT sensor.